Typewriting machine



R. W. UHLIGa TYPEWRITING MACHINE Filegi April 30', 1923 Patented Dec. 1,1925.

UNITED STATES PATENT OFFICE.

RICHARD W. UI-ILIG, 0F NEWARK, NEW ERSEY, ASSIGNOR T0 ALLEN TYPETURITERMANUFACTURING COMPANY, OF ALLENTOWN, PENNSYLVANIA, A CORPORATION OFPENNSYLVANIA.

TYPEWRITING ACHINE.

Application filed April 30, 1923.

To all whom it may concern:

Be it known that I, RICHARD TV. UHLIG, a citizen of the United States,and resident of Newark, in the county of Essex and State of New Jersey,have invented certain new and useful Improvements in TypewritingMachines, of whichthe following is a specification.

This invention relates to typewriting machines 0f the front strike typein which bars fulcrumed or pivotally supported at one end and carryingtype at the opposite ends are actuated by finger key levers to be movedfrom a normal position of rest to contact with the front of a platen andreturned to position of 'rest'upon the removal of pressure from thefinger keys. In this type of machine to compensate for unevenness intouch of the operatorupon the actuating of the finger key levers with aresultant unequal inking of printed characters, and to also prevent thetypebar from too forcibly impinging the type against the writing sheeton the platen" with the possibility of cutting the sheet by the type,and thereby also the wearing of the type, an abutment or stop with whichthe typebars engage or contact atthe time of-or just previous to thetype striking" against the platen to thereby limit and retard themovement of a typebar toward the platen. In the provision of an abutmentfor this purpose constructed integral with the typebar carrying segmentin the form of a rib projecting from the segmentowing to inequalitiesand irregulari ties in the typebars, due to springing and distorting byhardening and otherwise, considerable time is required to adjust thetypebars by bending and springing the same in order to properly 'alinethe typebar to cause the type of successively actuated bars to impressthe type successively intrue alinement upon the 'writing' sheet upon theplaten.

It is the object of thepresent invention to provide an improvedconstruction and arrai'igement of typebars and abutment for the typebarsto contact with to limit the movement thereof toward the platen, saidabutment while being rigid for'the engagement of the typebars at thesame'time being pliable and adjustable to permit of the movement at thetypebars to a gr a erfl rles e t nt Serial No. 635,588.

towar'dthe platen and thereby obviate the necessity of bending andspringing of the typebars to cause them when actuated to properlyimpinge against the platen, and thereby also greatly facilitate thealinement of the typebars and type.

Other objects andadvantages will hereinafter appear. v

In the drawing accompanying and forming a part of this specificationFigure 1 is a side elevation of a typebar action of a typewritingmachine and a segment therefor showing an embodiment of my invention,only so much of a. typewriting machine being shown as is essential to anunder standing of the invention; and

Figure 2 is a perspective view of a portion of the segment. showing thearrangement of my improved typebar abutment or stop mounted thereon.

Similar characters of reference designate likeparts throughout thedifferent views of the drawing.

In carrying out the embodiment of the invention shown in the drawing asegment 3 is suitably mounted in the framework of the machine andarranged with a seat 4 for the engagement of a support 5 in the form ofa wire or rod upon which typebars 6 are fulcrumed or pivotally.supported at one end and carry type 7 at the opposite end, the segmentbeing slotted asat 8, for the engagementofthe typebars and to guide thebars as they are actuated to strike rearwardly against the front of aplaten 9. The slotted portion of the segment has an overhang 10 todirect foreign matter, such as erasings made on the writing sheet uponthe platen, away from the bearing support of the'typebars; The typebarsare actuated by levers 12 pivotally supported in the framework, as at13, having finger keys 14 at the forward ends and'operatively connectedto the typebars 6 by links '15; These levers are normally in the-fullline position shown in Figure 1 with the typebars normally at rest upona support 16. As the key end of a lever isde-' pressed to the dottedline position the connected typebar through its link connection is movedupward and swung toward the front of the'pLaten, as the pressure isremoved from the key end of the lever t e lever is ienani dty pring t.-

The segment 3 is arranged so that the typebar supporting fulcrum rod 5is substantially in a plane that the front of the platen is in the sameplane. To limit the movement of. the typebars toward the platen each ofthe typebars is arranged with a heel or projection 18 extending from therear or with the edge of the typebar to which the bar car 'ying head 7is connected, said projection having an inclined or beveled face 19. Anabutment member 20in the form of a comb is mounted in fixed positionupon the top of the segment, as by screws 21, with the teeth 22 of thecomb inv line with and projecting over the segment slots 8 and in linewith the path or movemento't the typebars. As a typebar is moved toprinting position against the platen the inclined face 19 of the typebarheel 18 will contact or engage with a tooth 22 of the comb arrestingthemovement of the typebar, and this contact of the typebar with thiscomb tooth may be arranged to be simultaneous with the contact theoperation of its key lever to'cause the t to strike" against the platenor to strike too forcibly against the platen, the tooth ofthe abutmentwith which said typebar co-oper'ates is adjusted upwardly or downwardlyin a direction in line with the 'movement'iof the typebar therebycausing the inclined face l9of the typebar projection to come intocontact earlier orlater in the movement of the typebar.

From Figure 1 it will be noted that the type of the typebar shown infull lines is in contact with the platen with theincline face 19 of thetypebar in contact with the end of a comb tooth extending horizontallyoutward from the segment. Should the tooth be adjusted to or should itinitially have been in the position indicatedin dotted lines, theinclined face 19 would be caused to contact with the end of the combtooth too earlyand the typebar would be permitted to move only to theposition indicated in dotted lines. Should the comb tooth be adj usteddownwardly from the horizontal, the incline face 19 would contacttherewith later in the travel of-the typebar and permit the typebar tomove to a greater extent toward the platen. The typebars are guided intheir movement to the platen by a guide 25 suitably mounted upon thesegment:

By the arrangement as above described I not only provide an adjustableabutment or stop for the typebars, but by the arranging of the teeth ofthe comb in line with the segment slots any erasings from the writingsheet on the platen will be directed away invention, I

ment'thereoi" toward the platen, and said' teeth adapted to beadjusted-in a direction with the movement of the typebars to project toa greater or less extent into the path of movement of the typebars forthe purpose specified.

2. In a typewriting machine, the c0mbination of a platen; a fulcrumedtypebar normally positioned out of contact with the platen and adaptedto be swung to printing position in contact with the platen, saidtypebar having a projection extending from one edge arranged with aninclined face; and a rigid abutment interposed between the typebar andplaten having an adjustable portion projecting into the path of movementof the typebar to be engaged by the inclined face of the typebarprojection to limit the movement of the typebar toward the platen.

In a typewriti-ng machine, the combi nation of a platen; a segment;typebars pivotally carried by the segment each having a projection withan inclined face; and a rigid member mounted upon the segment arrangedwith individual abutments projecting into the path of movement of eachof the typebars to he engagedvb the inclined face of the, typebarprojections in the movement of the typebars toward the platen.

l. Ina typewriting machine the combination of a platen; a slottedsegment; typebars pivotally supported in the slots of the segment;linger key levers operable to swing the typebars toward the platen; anda rigid comb member mounted upon the segment arranged with projectionsextending in line with the slots of the segment and in the path ofmovement of and to be engaged by the typebars to limit the movementthereof toward the platen.

In a typewriting machine, thecombination of a platen; a slotted segment,typebars pivotally' supported in the slots of the segment; finger keylevers operable to swing the typebars toward the platen; and a rigidcomb mounted upon the segment with. the teeth. thereof to project overthe segment nation of a platen; a slotted segment; typebars pivotallysupported in the slots of the segment, each bar having a PI'OJGCtlOIlextending from one edge lntermedlate the ends and arranged with aninclined face; finger key levers operable to swing the typebars toprinting position relative to the platen; a comb fixed to the segmentWith the teeth thereof to extend over the segment slots and in line withthe path of movement of the typebars to be engaged by the inclined facesof the typebar projections, and said comb teeth adapted to be adjustedin a direction in line with the movement of the typebars to limit themovement. thereof toward the platen.

Signed at Allentown in the county of Lehigh and State of Pennsylvaniathis 24th day of Jan. A. D. 1923.

RICHARD WV. UHLIG.

